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Cody: Hi, My name is Cody Grundy. I’m from the U.S.
| A． |
Pan: Hi, I’m Peter Pan.
Cody: Are you American?
Pan: No, I’m not. I’m Australian. Who’s that?
Cody: That’s my friend, Li Beibei.
Pan: Is Li his first name?
Cody: No, it’s not. His first name is Beibei. He is a Chinese boy.
| | 国家 | 姓 | 名 |
| Beibei | | | |
| Pan | | | |
| Cody | | | |
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
